Houston police said earlier Tuesday that the man might have a gun with him inside the vehicle, but we are awaiting more information from investigators.

We do not know what led up to this situation.

HISD says Hamilton Middle School, which is near the scene of the standoff, was placed on lockdown as SWAT officers worked to bring this situation to a peaceful end.

The district released this statement to ABC13: The Hamilton Middle School campus has been placed in lockdown mode as a precautionary measure while Houston police investigate suspicious activity in the area. All students are safe. Please know we take these situations very seriously, as the safety of our students is always our top priority.